title: Anisotropic magnetoresistance in manganites: experiment and theory.
abstract: We present measurements of the anisotropic magnetoresistance (AMR) of La(0.75)Sr(0.25)MnO(3) films deposited on (001) SrTiO(3) substrates, and a model that describes the experimental results. The model, based on the electronic structure of manganites plus the spin-orbit coupling, correctly accounts for the dependence of the AMR on the direction of the current to the crystalline axes. We measure an AMR of the order of 10(-3) for the current I parallel to the [100] axis of the crystal and vanishing AMR for I <parallel> , in agreement with the model predictions. Further, we calculate the planar Hall effect and show its connection to AMR.
authors.affiliation: Centro Atómico Bariloche, CNEA, CONICET, Bustillo 9500, (8400) San Carlos de Bariloche, Argentina.
authors.forename: J D
authors.initials: JD
authors.lastname: Fuhr
authors.forename: M
authors.initials: M
authors.lastname: Granada
authors.forename: L B
authors.initials: LB
authors.lastname: Steren
authors.forename: B
authors.initials: B
authors.lastname: Alascio